libroot/posix/fseek_test.cpp

36 	FILE *fp;
57 	fp = fdopen(fd, "w+");
58 	if (fp == NULL)
61 	setbuffer(fp, strbuf, sizeof(outstr) - 1);
63 	if (fwrite(outstr, sizeof(outstr) - 1, 1, fp) != 1) {
70 	if (fgetc(fp) != EOF) {
73 	} else if (!feof(fp)) {
77 	if (fseek(fp, 0, SEEK_CUR) != 0) {
78 		printf("%d: fseek(fp, 0, SEEK_CUR) failed\n", __LINE__);
80 	} else if (feof(fp)) {
86 	if (fgetc(fp) != EOF) {
89 	} else if (!feof(fp)) {
93 	if (fseeko(fp, 0, SEEK_CUR) != 0) {
94 		printf("%d: fseek(fp, 0, SEEK_CUR) failed\n", __LINE__);
96 	} else if (feof(fp)) {
102 	if (fseek(fp, 0, SEEK_SET) != 0) {
103 		printf("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
105 	} else if (fflush(fp) != 0) {
111 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
120 	if (fseeko(fp, 0, SEEK_SET) != 0) {
121 		printf("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
123 	} else if (fflush(fp) != 0) {
129 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
138 	if (fseek(fp, -((int) sizeof(outstr) - 1), SEEK_CUR) != 0) {
139 		printf("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
141 	} else if (fflush(fp) != 0) {
147 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
156 	if (fseeko(fp, -((int) sizeof(outstr) - 1), SEEK_CUR) != 0) {
157 		printf("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
159 	} else if (fflush(fp) != 0) {
165 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
174 	if (fseek(fp, -((int) sizeof(outstr) - 1), SEEK_END) != 0) {
175 		printf("%d: fseek(fp, 0, SEEK_SET) failed\n", __LINE__);
177 	} else if (fflush(fp) != 0) {
183 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
192 	if (fseeko(fp, -((int) sizeof(outstr) - 1), SEEK_END) != 0) {
193 		printf("%d: fseeko(fp, 0, SEEK_SET) failed\n", __LINE__);
195 	} else if (fflush(fp) != 0) {
201 	} else if (fread(buf, sizeof(outstr) - 1, 1, fp) != 1) {
209 	if (fwrite(outstr, sizeof(outstr) - 1, 1, fp) != 1) {
215 	if (fwrite(outstr, sizeof(outstr) - 1, 1, fp) != 1) {
221 	if (fwrite(outstr, sizeof(outstr) - 1, 1, fp) != 1) {
227 	if (fwrite(outstr, sizeof(outstr) - 1, 1, fp) != 1) {
233 	if (fputc('1', fp) == EOF || fputc('2', fp) == EOF) {
246 		if (fseek(fp, -(2 + 2 * (sizeof(outstr) - 1)), SEEK_CUR) != 0) {
279 	if (fread(buf, 1, 2 + 2 * (sizeof(outstr) - 1), fp) != 2 + 2
289 	} else if (ungetc('9', fp) == EOF) {
292 	} else if (fseek(fp, -(2 + 2 * (sizeof(outstr) - 1)), SEEK_END) != 0) {
295 	} else if (fread(buf, 1, 2 + 2 * (sizeof(outstr) - 1), fp)
312 	fclose(fp);
314 	fp = fopen(fname, "r");
315 	if (fp == NULL) {
318 	} else if (fstat(fileno(fp), &st1) < 0) {
321 	} else if (fseeko(fp, 0, SEEK_END) != 0) {
322 		printf("%d: fseeko(fp, 0, SEEK_END) failed\n", __LINE__);
324 	} else if (ftello(fp) != st1.st_size) {
326 			(size_t) st1.st_size, (size_t) ftello(fp));
330 	if (fp != NULL)
331 		fclose(fp);
333 	fp = fopen(fname, "r");
334 	if (fp == NULL) {
337 	} else if (fstat(fileno(fp), &st1) < 0) {
340 	} else if (fgetc(fp) == EOF) {
343 	} else if (fseeko(fp, 0, SEEK_END) != 0) {
344 		printf("%d: fseeko(fp, 0, SEEK_END) failed\n", __LINE__);
346 	} else if (ftello(fp) != st1.st_size) {
348 			(size_t) st1.st_size, (size_t) ftello(fp));
352 	if (fp != NULL)
353 		fclose(fp);
378 	FILE *fp = fopen("/tmp/fseek_test.data", "r+");
379 	if (fp == NULL)
383 	int ch = fgetc(fp);
385 	ch = fgetc(fp);
389 	ASSERT(ftell(fp) == 2);
390 	ASSERT(fseek(fp, 0, SEEK_CUR) == 0);
391 	ASSERT(ftell(fp) == 2);
392 	ASSERT(fseek(fp, 0, SEEK_SET) == 0);
393 	ASSERT(ftell(fp) == 0);
394 	ASSERT(fseek(fp, 0, SEEK_END) == 0);
395 	ASSERT(ftell(fp) == 10);
396 	ASSERT(fgetc(fp) == EOF);
399 	ASSERT(fseek(fp, 2, SEEK_SET) == 0);
400 	ASSERT(ftell(fp) == 2);
401 	ch = fgetc(fp);
405 	ASSERT(ftell(fp) == 3);
406 	ASSERT(ungetc(ch, fp) == ch);
407 	ASSERT(ftell(fp) == 2);
408 	ASSERT(fgetc(fp) == ch);
409 	ASSERT(ungetc(ch, fp) == ch);
410 	ASSERT(ftell(fp) == 2);
411 	ASSERT(ungetc('!', fp) == '!');
412 	ASSERT(ftell(fp) == 1);
413 	ASSERT(ungetc('#', fp) == '#');
414 	ASSERT(ftell(fp) == 0);
415 	ASSERT(fseek(fp, 0, SEEK_CUR) == 0);
416 	ASSERT(ftell(fp) == 0);
417 	ASSERT(fseek(fp, 2, SEEK_SET) == 0);
418 	ASSERT(ftell(fp) == 2);
421 	ASSERT(ungetc('x', fp) == 'x');
422 	ASSERT(ftell(fp) == 1);
423 	ASSERT(ungetc('y', fp) == 'y');
424 	ASSERT(ftell(fp) == 0);
425 	ASSERT(fgetc(fp) == 'y');
426 	ASSERT(ftell(fp) == 1);
427 	ASSERT(fgetc(fp) == 'x');
428 	ASSERT(ftell(fp) == 2);
431 	ASSERT(ungetc('x', fp) == 'x');
432 	ASSERT(ftell(fp) == 1);
433 	ASSERT(ungetc('y', fp) == 'y');
434 	ASSERT(fseek(fp, 0, SEEK_CUR) == 0);
435 	ASSERT(ftell(fp) == 0);
436 	ASSERT(fgetc(fp) == '#');
437 	ASSERT(ftell(fp) == 1);
438 	ASSERT(fgetc(fp) == '!');
439 	ASSERT(ftell(fp) == 2);
442 	ASSERT(fseek(fp, 0, SEEK_END) == 0);
443 	ASSERT(ftell(fp) == 10);
444 	ASSERT(!feof(fp));
445 	ASSERT(fgetc(fp) == EOF);
446 	ASSERT(feof(fp));
447 	ASSERT(ungetc(' ', fp) == ' ');
448 	ASSERT(!feof(fp));
449 	ASSERT(fgetc(fp) == ' ');
450 	ASSERT(!feof(fp));
451 	ASSERT(fgetc(fp) == EOF);
452 	ASSERT(feof(fp));
455 	ASSERT(fseek(fp, 2, SEEK_SET) == 0);
456 	ASSERT(ftell(fp) == 2);
457 	ASSERT(fseek(fp, 0, SEEK_END) == 0);
458 	ASSERT(ftell(fp) == 10);
459 	ASSERT(ungetc(' ', fp) == ' ');
460 	ASSERT(fseek(fp, 0, SEEK_END) == 0);
461 	ASSERT(fgetc(fp) == EOF);
462 	ASSERT(ftell(fp) == 10);